You will need to get some professional help because I do not really know how to get someone to with with gambling.
That person is going to guide you and you should approach it the best way.
There is no use when a gambler is not willing to quit gambling by heart-fully. Yes, without own interest no one will be able to quit gambling. Even after a strong will of quitting, many gamblers are struggling to achieve that because of their long-term addictions towards gambling. But proper support from family, friends and professional doctors anyone can quit gambling.